Automatic lubricating supply system



June 16, 1925.

G. H. LANGFELDT AUTOMATIC LUBRICATING SUPPLY SYSTEM Filed June 13, 192.5

i4 5\ a I y Li /9 ATTORNEY desired flow may be had from within the tank or reservoir 1 through the discharge,

opening or port 21 provided at the axial center of the nut or cap 6. When the cap is to be removed, it is rotated in the opposite direction and when'saidcap 15 is comr pletely disengaged from the rod or stem 12 the member or spring 19 operatesautomatically to force the valve 11 to its seat where by is closed the discharge from the tankor reservoir 1. 1

The wall of the cage or shell 4 is, provided with suitablev openings 22 so that the oil or other fluid within the tank or reservoir 1 may have ready entrance Within the cage or shell 4.

' any other element into which the oil, is

adaptedto be delivered and maintained at substantially a constantlevel. F is in communication with the discharge opening or .port 21 through the medium of a conduit 25. The fitting F has also in communicationtherewith and depending therefrom a drain cook 26. The normal level of the liquid within the casing'or other member with which the fitting F communicates .willclose the discharge opening ofsaidfitting but as said levellowers and said discharge openingis partially opened, air will pass through said fitting upwardly of the conduit 25 into the reservoir or tank-,1

whereby oil will be delivered from said reservoir. or tank 1' until the 'oil level within the casing or the-like returns to its normal. In communication with the" fitting, ,F and extending upwardly therefrom' is an inlet tube 27, the upper or' outer end of which being closed by a cap 28 provided with an opening 29. 1 As herein disclosed the cap 28 is held in applied position through the medium of a screw 30 extending axially through the opening 29 and the tube 27 and in threaded engagement with the lower portionof the wall of the fitting F. The air inlet tube 27 is provided because under certain conditions the eduction end of the-fitting F maybe so small that air will not readily enter the small outlet openingthrough which the oil or fluid passes. By admitting air at the top The fitting r of the inlet tube 27, the oil or other fluid will readily pass from the tank or reservoir 1 and through the fitting F into the crank case or other element into which it empties until crank case or element becomes so full that the oil or other liquid in the fitting F- from its seat is limited by contact o frthe enlargement 31 carried by the rod or stem'l2 with the. member 18. V

VFrom the foregoing description it is thought to be obvious that an automatic lubricating supply system constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it-may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereofand for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation'of the several.

parts herein shown in carrying out my invention in practice Y except as hereinafter claimed.

I claim:

In combination with a normally closed tank and a discharge conduit leading there from, said tank being provided'with a filling openingin a wall thereof opposed to the wall with which the conduit coacts, a shell bridging said'walls, the wall of the shell being provided with openings, a member intersecting the shell intermediate the ends of the shell and providing a guide, a valve .within the shell for controlling the flow through; the conduit, a stem carried b the valve and extending lengthwise of the shell and through the guide, a cap for closing the filling opei1ing,, said cap having, a threaded socket with which'the-outer end of the stem engages to move the valve into open position upon rotation of the cap when being applied, a spring within the shell and interposed between the valve and the guide for automatically moving the valve into closed position when the cap is removed, andvan enlargement carried by the stem and coacting with the'guide to limitthe movement ill) of the valve from its seat, the shell and valve being provided with interlocking means to hold the valve and stem against rotation. v r v I In onyavhereo'f I hereunto afiix m signature,v to V 7 GROVER LANGFELDTQ 

